12. Binance: The Deep End of Crypto
The deepest books, the thinnest spreads, the fastest competitors — and a fee ladder that decides who's allowed to play.
The terrain
On BTC/USDT the spread is typically one tick — a single cent on a six-figure price, i.e. hundredths of a basis point — the queue at every level is enormous, and the firms at the front run co-located infrastructure with sub-millisecond loops. As a small operator you will not win that race, and base spot fees (0.10% = 10 bps) are literally thousands of times the spread on majors. The fee ladder is the gate: VIP tiers walk maker fees down toward zero — qualification is 30-day volume + BNB holdings, and since March 2026 also a parallel Holder Program where asset balances alone (plus small BNB minimums) reach any tier — and the formal Market Maker Program offers 0% maker plus rebates to participants meeting volume and (on futures) spread-quality quotas.
The ladder is best understood as a viability chart. Fix the spread you can realistically capture and walk up the tiers: at each step, recompute the round trip's net margin. The figure below does it with indicative USDT-M futures fees — the exact numbers drift (always re-read the fee page), but the shape of the conclusion doesn't.
Where the door is open: the long tail
Hundreds of pairs trade wider: liquid mid-caps (SOL, LINK class) run ~1–5 bps, and true small caps 5–30 bps, with thinner competition and real two-way retail flow. The price of admission is worse flow quality (toxicity spikes when a coin moves cross-venue) and thinner books to hedge into. The standard professional answer is cross-exchange hedged quoting: quote the pair where the spread is wide, hedge each fill instantly where the book is deep — often Binance itself for the hedge leg. The viability inequality of Chapter 7 becomes concrete: quoted spread must exceed (both legs' fees) + (hedge slippage) + (margin for toxicity). This becomes Proposal E.
11. Hyperliquid: Perps on a Purpose-Built Chain
A fully on-chain order book fast enough to market-make — plus a protocol-owned vault that democratized (and stress-tested) the business.
13. Interactive Brokers & Alpaca: The Equities Reality Check
In US equities, "market maker" is a legal status you probably can't have — but liquidity-providing strategies are still on the table.